Ben G. accelerates with the Battery-Guard
So you always know where your battery’s at


Battery monitoring via bluetooth

With the Battery-Guard and Apple or Android App, you can now check your battery’s state of charge quickly and easily. Because only with a fully charged vehicle battery can you be sure to avoid getting stuck.


Compatible with iPhone and Android.

  • Several vehicles can be monitored
  • Easy install to the battery
  • Monitoring of 6, 12 and 24 volt batteries possible
  • Power consumption is only about 6-24 MW
  • Reversepolarity does not cause damage to the transmitter or battery
  • App compatible from iPhone 4S or Android 4.3
How it works


Download the Battery-Guard App from the App Store or Google Play Store under "Battery-Guard". Compatible from iPhone 4S, Android 4.3.



Attach the Battery-Guard to the battery terminals. Fix the transmitter to the cleaned battery using the adhesive film provided.



Activate Bluetooth on your smartphone and then open the App. Bluetooth search mode is not required.



The transmitter appears in the list display. You can assign a name, an image and the rated voltage to the transmitter.

How much voltage does your battery have?

Voltage values of batteries

The full capacity and usability of the battery can be guaranteed only at a steady, positive state of charge.

The positive state of charge also prevents any potential premature damage or failure. We recommend recharging batteries as follows: when a 6V battery drops below 6.2 volt, a 12V battery below 12.50 volt and a 24V battery (series connection utility vehicles) below 24.8 volt.

To obtain a correct measurement, the vehicle should not be moved for a period of at least 3 hours. Connected consumers, such as light and vehicle electronics, must not be in use.

  • 6 volt battery
  • up to 6.01 volt
  • 6.02 to 6.04 volt
  • 6.05 to 6.25 volt
  • above 6.26 volt
  • 12 volt battery
  • up to 12.02 volt
  • 12.03 to 12.09 volt
  • 12.10 to 12.50 volt
  • above 12.51 volt
  • 24 volt battery
  • up to 24.04 volt
  • 24.05 to 24.19 volt
  • 24.20 to 25.00 volt
  • above 25.01 volt
deeply discharged partially charged
discharged charged